Roles of statistical mechanics in determining the density profile of mild relaxation

Kang, Dong-Biao

doi:10.1007/s10509-013-1688-7

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…According to results [13,14], the LMO manganite of stoichiometric composition has the properties of an insulator and is an antiferromagnet at low temperatures. But a small change in the oxygen content leads to the appearance of ferromagnetism with the Curie temperature of order 140-150 K. A ferromagnetism for the LMO films was reported in [15] and confirmed by measurements of temperature dependence of ferromagnetic resonance magnetic field H 0 (T) [16]. Fig.2 shows temperature dependences ρ(T) of resistivity of LMO film and the ferromagnetic resonance dependence.…”

Section: Methodsmentioning

confidence: 65%

Superconducting mesa-structures with a spin filtering manganite interlayer

et al. 2018

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Abstract. We report on current transport and magnetism in hybrid superconducting mesa-structures prepared from epitaxial superconductor YBa 2 Cu 3 O 7-δ and manganite LaMnO 3 thin films. Superconducting Au-Nb bilayer was the top electrode. Measurements of magnetic resonance in heterostructure with the only Au top electrode (without Nb) showed ferromagnetic state close to Curie temperature of LaMnO 3 , 150 K. A spin filtering was revealed by measurements of tunneling magneto-resistance. Mesa-structures had no superconducting current even at reduced temperature T=300 mK and the smallest manganite interlayer thickness, d M =5.6 nm. Varying the external magnetic field |H|<10 Oe and dc bias current |I|<0.5 mA the microwave generation with power P <1 pW with a line-width of order 50 MHz was observed in GHz frequency band. The frequency of generation could be tuned by the biasing current with a rate 10 13 Hz/A. The impact of spin polarized current on microwave generation is discussed taking into account the asymmetry of oscillation amplitudes over the applied magnetic field.

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